Barack Obama will make a blitz through evening newscasts and late-night comedy in the coming days, complementing plans for a 30-minute prime time address across seven broadcast and cable networks.

Obama will appear on “The Daily Show with Jon Stewart” on Wednesday. That same evening, he is interviewed on “ABC World News with Charles Gibson,” and appears on “NBC Nightly News with Brian Williams” the following evening.

Obama’s 30-minute block of time airs at 8 p.m. PDT on NBC, CBS, Univision and BET, and immediately following the World Series game on Fox (if there is one). MSNBC and TV One run the address at 5 p.m.

Obama spokesman Bill Burton offered a few details of what to expect from the big TV buy: “The program will share the specifics of Obama’s plans to turn the economy around and get the country back on track. With this historic election only a week away – and John McCain’s angry, desperate attacks mounting by the day – we want to make sure every voter heading into the voting booth knows exactly what Barack Obama would do to bring about fundamental change as president. It’s the same case our campaign is making on the phone, on doorsteps and in our conservations with voters every day. Obama’s will turn the page on George Bush’s failed economic policies and provide the real relief the middle class needs right now.”

A counterbalance: John McCain will appear on “Larry King Live” on Wednesday.

Update: Fox News denies that it may have to move the start of the World Series game (for the East Coast) to accomodate the Obama infomercial. It came in response to John McCain’s criticism of Obama’s big buy.

“No one will delay the World Series game with an infomercial when I’m president,” said McCain, per the Politico.